Chapter 11 – Thermodynamics

The initial state of a certain gas is (Pt ​Vt ​ Tt ​). It undergoes expansion till its volume become Vf . Consider the following two cases: The initial state of a certain gas is (Pt ​Vt ​ Tt ​). It undergoes expansion till its volume become Vf . Consider the following two cases: September [...]

If the coefficient of performance of a refrigerator is 5 and operates at the room temperature 27C, the temperature inside the refrigerator is: If the coefficient of performance of a refrigerator is 5 and operates at the room temperature 27C the temperature inside the refrigerator is: September 13, 2021 Category: Chapter 11 - Thermodynamics , [...]

Consider a cycle tyre being filled with air by a pump. Let V be the volume of the tyre (fixed) and at each stroke of the pump ΔV(

A person of mass 60 kg wants to lose 5kg by going up and down a 10 m high stairs. Assume he burns twice as much fat while going up than coming down. If 1 kg of fat is burnt on expending 7000 kilo calories, how many times must he go up and down to [...]

Air pressure in a car tyre increases during driving. Explain. Air pressure in a car tyre increases during driving. Explain. September 13, 2021 Category: Chapter 11 - Thermodynamics , NCERT Exemplar Class 11 , Physics ,

A system goes from P to Q by two different paths in the P-V diagram as shown in Fig. 12.8. Heat given to the system in path 1 is 1000 J. The work done by the system along path 1 is more than path 2 by 100 J. What is the heat exchanged by the [...]

Is it possible to increase the temperature of a gas without adding heat to it? Explain. Is it possible to increase the temperature of a gas without adding heat to it? Explain. September 13, 2021 Category: Chapter 11 - Thermodynamics , NCERT Exemplar Class 11 , Physics ,

Figure shows the p-V diagram of an ideal gas undergoing a change of state from A to B. Four different parts I, II, III and IV as shown in the figure may lead to the same change of state. Figure shows the p-V diagram of an ideal gas undergoing a change of state from A [...]

An ideal gas undergoes isothermal process from some initial state i to final state f. Choose the correct alternatives. An ideal gas undergoes isothermal process from some initial state i to final state f. Choose the correct alternatives. September 13, 2021 Category: Chapter 11 - Thermodynamics , NCERT Exemplar Class 11 , Physics ,

Three copper blocks of masses M1, M2 and M3 kg respectively are brought into thermal contact till they reach equilibrium. Before contact, they were at T1, T2, T3 (T1 > T2 > T3). Assuming there is no heat loss to the surroundings, the equilibrium temperature T is (s is specific heat of copper) M2 and [...]